title: Reversal of spiral waves in an oscillatory system caused by an inhomogeneity.
abstract: Spatial heterogeneities are commonly found in realistic systems and play significant roles in dynamics of spiral waves. We here demonstrate a novel phenomenon that a localized inhomogeneity put around the spiral core could lead to the reversal of spiral waves in an oscillatory system, e.g., the complex Ginzburg-Landau equation. With the amplitude-phase representation, we analyze underling mechanism and conditions of the wave reversal in detail, which is found to agree with the numerical evidence.
authors.affiliation: Zhejiang Institute of Modern Physics and Department of Physics, Zhejiang University, Hangzhou 310027, China.
authors.forename: Teng-Chao
authors.initials: TC
authors.lastname: Li
authors.forename: Bing-Wei
authors.initials: BW
authors.lastname: Li
mesh_terms: D000465:Algorithms; D001703:Biophysics / Q000379:methods; D003198:Computer Simulation; D004058:Diffusion; D006801:Humans; D008955:Models, Cardiovascular; D009038:Motion; D017711:Nonlinear Dynamics; D009991:Oscillometry / Q000379:methods*